Sunday, March 18, 2012

Archives for September 2010

GPS reception myths and misconceptions

An interview with TeleNav’s Bob Rennard

Bob-RennardMost of us have had times when GPS reception was challenging, and it’s easy to make a leap in logic and blame it on current environmental conditions. Today, I’m happy to say that Bob Rennard, TeleNav co-founder and Chief Technical Officer, has agreed to tackle these issues head on in an interview with GPS Tracklog. So lets see if we can clear up some GPS reception myths and misconceptions…

Bob, can you tell our readers a bit about your background and what role you played in the development of GPS?

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GPS chip in boot guides air strike of guerilla camp

Mono_jojoy_-_EEUUA pair of GPS-chipped boots has helped Colombian military forces destroy a Revolutionary Armed Forces of Colombia (FARC) camp, killing 20 rebels and second in command “Mono Jojoy” (pictured at left). Suffering from diabetes and subsequent foot problems, the leader had ordered a pair of custom boots made. When a communication was intercepted, the Colombian military intervened, managing to insert the GPS chip into the boots.

My point in posting this story is to delve into the technology involved. I’ve already been contacted by one mainstream media reporter, asking if this is plausible. In a word, yes. GPS chips are very small and transmitting location is not a huge technological feat. Remote monitoring is the challenge, due to two aspects:

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DeLorme PN-60w / SPOT deal and testing update

DeLorme PN-60w SPOT

UPDATE: I have reason to believe that this deal may be gone by tomorrow. I suspect that DeLorme may have saddled dealers with a minimum resale price, though that is purely conjecture on my part.

UPDATE 2: Hmm, the deal is still there as of 9/22. Maybe I got bad info. The page now says the rebate is in effect through 9/25.

UPDATE 3: Looks like its now priced at $449.00.

UPDATE 4: I’ve posted reviews of the DeLorme Earthmate PN-60w and the PN-60w / SPOT Communicator combo

J&R Computer/Music World has the DeLorme Earthmate PN-60W Handheld GPS with SPOT Satellite Communicator on sale for $399.95 with free shipping, $90 less than Amazon’s price this morning. This is an amazing deal for a just released product that allows you to text friends, send an SOS, or post to Twitter or Facebook where there is no cell reception.

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Update on Garmin GPSMAP 62 series performance

Garmin-62s-tracklog When I reviewed the Garmin GPSMAP 62s, I gave it a tentative recommendation because I needed to run beta firmware to get accurate tracklogs. Since then, I’ve been testing the 62 series with the 2.50 (non-beta) firmware and, as promised, I’m updating my recommendations.

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TomTom eases in expanded feature set

TomTom XXL 550 Owners of some TomTom units with the EASE interface (XL 350 series, XL 550 series and XL 335 LE, LM & SE models, but apparently not the EASE itself) might want to connect their units to the TomTom HOME app on their computers. A new firmware update will add the following features:

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LMT, nuLink and the nu Garmins

UPDATE: LM and LMT pages on GPS Tracklog:

It’s been a few days since a batch of nu Garmins were announced, and I finally have some details for you. Let’s start off with a quick look at some nu Garmin marketing jargon.

An abbreviated look at LMTs

Garmin has apparently dropped the LMU (lifetime maps updates) designation, in favor of LTs (lifetime traffic), LMs (lifetime maps) and LMTs (lifetime maps and traffic). Hopefully, this will avoid any confusion with TomTom’s TM units, which stands for lifetime traffic and maps (though I wonder how many people think it means trademark).

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Garmin nuvi 2200 and 2300 series announced

Garmin nuvi 2360LT

UPDATE: Read my hands on review of the Garmin nuvi 2350LMT. I also have resource pages up for the nuvi 2300LM, 2350, 2350LMT, 2350LT, 2360LT, 2360LMT and 2370LT.

Garmin announced two new budget series today, the nuvi 2200 and 2300 product lines. Both come equipped with multi-destination routing, as well as the trafficTrends (historical road speed database) and myTrends features recently introduced on the nuvi 3700 series. The 2200 series will will utilize a 3.5” touchscreen, while the 2300 series will have a 4.3” screen and allow users to “preview multiple routes.” Models with an LT designation will include lifetime traffic.

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Garmin zumo 220

Garmin zumo 220 The Garmin zumo 220 is an entry-level model in the motorcycle-friendly zumo line. The thin form factor unit offers many of the features of its more advanced siblings, albeit with a smaller 3.5” touchscreen. Included are lane assist, Bluetooth headset compatibility, multi-destination routing and on-road/off-road travel options.

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Garmin zumo 665

Garmin zumo 665 review The motorcycle-centric Garmin zumo 665 updates the zumo 660, adding an XM receiver for XM Satellite Radio®, real-time XM NavWeather® and real-time XM NavTraffic®. Designed especially for motorcycles, the 665 brings earlier zumo series features, like a customizable display with glove-friendly, oversized touchscreen buttons. It comes pre-loaded with maps of the US and Canada, and includes Bluetooth for hands free cell phone calling through the cyclist’s helmet.

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